Title :
Performance Evaluation of APK Modulation for Nonlinear Satellite Communication Channel
Author :
Baryun, Abdussalam Nuri
Author_Institution :
Integrated Commun. Res. Centre, Univ. of Glamorgan, Pontypridd, UK
Abstract :
There is interest in getting high bit rate over satellite channel containing a nonlinear power amplifier. This paper studies different orders of amplitude phase shift keying (APK) modulation, 16-ary quadrature amplitude modulation (QAM) and predistortion considerations over the satellite power amplifier. Satellite transmission channel has been modelled to simulate and compare between methods for a better performance. The Saleh Model and Ghobni model has been selected from literature measurements of the travelling-wave tube-amplifier (TWTA) and solid state-power-amplifier (SSPA) respectively; however, in the simulation the TWTA gives better performance than SSPA in most modulation techniques. It was investigated with predistortion and without predistortion the best modulation constellation performance under nonlinear communication channel.
Keywords :
channel estimation; phase shift keying; power amplifiers; quadrature amplitude modulation; satellite communication; travelling wave amplifiers; travelling wave tubes; 16-ary quadrature amplitude modulation; APK modulation; QAM; Saleh Model and Ghobni model; amplitude phase shift keying; nonlinear power amplifier; nonlinear satellite communication channel; performance evaluation; satellite transmission channel; solid state-power-amplifier; travelling-wave tube-amplifier; Amplitude modulation; Bit rate; High power amplifiers; Phase modulation; Phase shift keying; Power amplifiers; Predistortion; Quadrature amplitude modulation; Satellite communication; Solid modeling;
Conference_Titel :
Computer and Electrical Engineering, 2009. ICCEE '09. Second International Conference on
Conference_Location :
Dubai
Print_ISBN :
978-1-4244-5365-8
Electronic_ISBN :
978-0-7695-3925-6
DOI :
10.1109/ICCEE.2009.227
